Saw-mill



2 Sheets-Sheet 1.

(N0 Model.)

Bf G. WILEY.

SAW MILL.

Patented Oct. 23

(No Model.) 2 Sheets-Sheet 2.

E. C. WILEY.

SAW MILL.

No.- 391,444. 6 Patented Oct. 23, 1888.

. connect them with the foot-plates.

UNITED STATES EDGAR CLARENCE WILEY, OF INDEPENDENCE, VIRGINIA.

SAW MILL.

SPECIFICATION forming part of Letters Patent No. 391.44%, dated Qctcber 23, 1888.

Application filed Februaryflf), 1888. Serial No. 265,673. (No model.)

To aZZ whom it may concern.-

Be it known that I, EDGAR CLARENCE WI- LEY, a citizen of the United States, residing at Independence, in the county of Grayson and State of Virginia, have invented a new and useful Improvement in Saw-Mills, of which the following is a specification.

My invention relates to an improvement in circular-saw mills; and it consists in the peculiar construction {and combination of devices,that will be more fully set forth hereinafter,and particularly pointed out in the claims.-

In the accompanying drawings, Figure 1 is an elevation of a circular-saw mill embodying my improvement. Fig. 2 is a vertical longi-. tudinal sectional view of the same. Fig. 3 is partly a top plan View and partly a horizontal sectional view on the line x 00 of Fig. 1.

Figs. 4 and 5 are detail sectional views. Fig.

6 is an enlarged vertical sectional view taken on the line a a of Fig. 3, illustrating the relative arrangement of the pinions and gearing by which the'device is rendered operative to raise and lower the same.

A represents the saw-frame, which is of the usual or any suitable construction,and B represents a pair of vertical standards, which are secured on the upper sides of the said sawframe. The said standards are provided at their lower ends,on their rear sides,with horizontally-extending foot-plates C, which are formed integrally with the said standard, and are bolted on the upper side of the frame, and the said standards are further provided on their rear sides with curved braces D, which On opposite sides of each standard are laterally-projecting flanges E, and the front side of each standard is provided throughout its entire length with rack-teeth F.

G represents a brace frame or bar, which connects the standards B, and has its ends bolted to theinner sides of the said frame. The function of this brace is to prevent lateral vibration of the standards.

H represents a pair of curved bracket-arms, which have their lower ends bolted to the inner side of standards 13, near the upper ends thereof. In the said bracket-arms is journaled the transverse shaft I, which is provided near one of its ends with a pulley, K.

L represents a pair of sliding blocks, which are provided on their rear sides with grooves and flanges, which adapt them to receive and move vertically on the standards B, as shown in Fig. 3. The said slide-blocks have their rear flanges, Z, bearing against the rear sides of the flanges E, and bolts Z engage threaded openings in the said flanges Z, and have their ends pointed and adapted to engage countersunk recesses l in the rear sides of flanges E.

M represents a transverse brace, which has its ends bolted to the blocks or slides L, and serves to connect the said blocks or slides. In the latter is jonrnaled a transverse shaft, N,

the ends of which project beyond the stand ards B, and to one end of the said shaft is secured a circular saw, O,in any suitableinanner, and to the opposite end of said shaft is rigidly secured a driving-pulley, I. A small pulley, It, is also rigidly secured to said shaft, and on one side of said pulley, and also rigid with the shaft, is a pinion, S.

T represents a shaft, which is journaled in the boxes L, and is arranged at a slight distance in rear of the shaft N. To this shaft T is rigidly secured a spur-wheel, U, that engages pinion S and a small pulley, V.

W represents a shaft, which is journaled in the sliding blocks L at a suitable distance below the shaft N. The said shaft WV has a crank, X, at one end, and is provided with a pair of rigid spur-pinions, Y, which mesh with the rack-teeth F of the standards.

Z represents a ratchet-wheel, which is rigidly secured to the shaft WV, and has a pulley, A, secured to one side thereof or formed integrally therewith. The said pulley is connected to the pulley V on shaft T by means of a slack endless belt, B.

0 represents a lever, which is fulcrumed on the shaft W, and is provided at its shorter end with anti-friction roller D, that bears under the belt 13. The said lever G constitutes a belt-tightener, by means of which the friction exerted by the belt on pulleys A and V may be increased to such an extent as to transmit the rotation of the shaft T to the shaft W, for the purpose to be hereinafter described.

E represents a shaft, which is journaled in the sides of frame A at a point below'the lower ends of the standards B. To this shaft is secured a pulley, F.

G represents an endless belt, which is circu lar in cross-section. The said belt passes over the pulley K, under the pulley F, and entirely around the pulley R on shaft N.

H represents a pawl or detent, which is pivoted to the crossbar or frame M and engages the ratchetwheel Z.

The operation of my invention is as follows: Rotation is imparted to the saw shaft or arbor by means of an endless belt, which connects the pulley l? to the driving-pulley of an engine or other suitable motor. The rotation of the said saw-shaft is imparted to the pulleys K and F by means of the pulley It and the endless belt G, and the pinion S,whieh meshes with the spur-wheel U on shaft T, causes said spur-wheel shaft and pulleyV to rotate. The loose beltB, which connects the pulley V with pulley A, permits the latter to remain normally at rest.

Ordinarily saw-logs are fed to the upper side or portion of the circular saw by means of a suitable carriage, in the usual manner. Occasionally, however, a log is so large that the saw cannot pass entirely through the same, and hence the log cannot be sawed at a single operation.

The object of my invention is to provide means whereby the saw, after passing through the lower side of the log, maybe elevated after the log has been withdrawn by its carriage, and caused to operate on the upper side of the log when the latter is again fed forward by the carriage, so as to complete the operation of sawing the log. This is done in the following manner: After the saw has passed through the lower side of the log, and the latter has been withdrawn by its carriage, the operator depresses the front end of the belt-tightener O, and causes the latter to tighten the belt B, and thereby impart the motion of the shaft T to the shaft W. The rotation of the said shaft causes the pinions Y, secured thereto, to revolve, and as the said pinions are in engagement with the rack-teeth F their rotary motion causes the slide-boxes L, in which the saw-shaft is journaled, to be elevated on the standards B, and thereby elevate the saw a suitable distance. The detent H engages the ratchet-wheel Z, and, as soon as the saw is elevated to the required height and the operator releases his grasp on the belt-tightener and said detent,by engaging the said ratchet-wheel prevents retrograde rotation of the latter and of the shaft V and the pinions Y, and consequently the latter support the sliding blocks L at the desired elevation on the standards. In order to prevent the said sliding blocks from vibrating slightly on the standards, the operator applies a wrench to the bolts Z and turns the same so as to cause their pointed ends to engage the countersunk depressions Z on the rear sides of the flanges E of the standards, and thus hold the said slides L very rigidly to the standards, as will be very readily understood. In order to lower the saw to its normal position, the operator grasps the crankhandle and one end of the shaft W and disengages the pawl or detent from the ratchetwheel Z, and turns the shaft W slowly in a retrograde direction, thereby causing the spur-pinions Y to move downward on the standards 13 and carry the slide-boxes and the saw-shaft with them. It will be understood, of course, that before the slide-boxes and saw can be lowered the bolts Z must be disengaged from the recesses Z In order to guide the saw straight in the kerf, I provide an arm, a, which is bolted to the brace M and extends rearward near the inner side of the saw. This arm has its rear end curved around the rear edge of the saw, as at b, and is provided on opposite sides of the saw with openings, in which are inserted guide-pins c of the usual construction, which guide-pins bear against opposite sides of the saw and serve to steady and direct the same. This guide, being secured to the cross bar or brace M, partakes of the vertical adj ustability of the saw, and is moved simultaneously therewith.

Having thus described my invention, I claim 1. The combination of the standards having the rack-teeth, the slid e-boxes movable vertically on said standards, the saw-arbor journaled in the slide-boxes, the shaft W, also journaled in the slide-boxes and having the pin ions engaging the rack-teeth, and gears, substantially as described, to connect and disconnect the shaft 1V and saw-arbor, for the puropse set forth, substantially as described.

2. The combination of the standards having the rack-teeth, the slide-boxes movable on said standards, the saw-arbor journaled in the slide-boxes, the shaft T, journaled in the slide boxes and geared to the arbor, the shaft W, journaled in the slide-boxes, the loose endless belt connecting pulleys on the shafts T and W, and the lever to tighten said belt, substantially as specified.

3. The combination of the standards, the slide-boxes movable vertically on the standards, the saw-arbor journaled in said slideboxes and provided with the pulley R, the endless belt guided on suitable pulleys and engaging said pulley R, the shaft T, geared to the saw-arbor and having the pulley V, the shaft W, journaled in the slide boxes and having the spur-wheels or pinions engaging rack-teeth in the standards, and connections between the shaft T and shaft WV to operate the latter, for the purpose set forth, substantiall y as described.

l. The combination of the standards having the rack-teeth, the slide-boxes movable vertically on said standards, the saw-arbor journaled in the slide-boXes and having the pul ley R and pinion S, the shaft T, journaled in the slide-boxes and having the slide U meshing with pinion S and the pulley V, the shaft \V, journaled in the slide-boxes and having the pinions Y engaging the rack-teeth of the lIO standards, and provided, furthe1*,with the pulmy own I have hereto affixed my signature in ley A, and the endless belt B, connecting pulpresence of two witnesses.

EDGAR CLARENCE WILEY.

for the purpose set forth, and the endless belt leys V and A, means to tighten the said belt, I 5 guided 0n suitable pulleys and connected to I Witnesses:

the pulley R, substantially as described. NAT KEISTER, In testimony that I claim the foregoing as I \V. B. PETERS. 

